bool update
float64 lon
float64 lat
float64 height
float64 heading
float64 velocity
float64 track_angle
int32 week
float64 utctime
float64 hdop
float64 diff_age
float64 base_length
float64 heading_std
float32 xg
float32 yg
float32 zg
uint8 status
uint8 satenum
uint8 status_yaw
uint8 is_heading_valid